Oil-hole cover.



0. P. TUCKER.

OIL HOLE COVER.

APPLICATION FILED NOV. 11, 1913.

1,1 34,025. Patented Mar. 30, 1915.

Wt'nesses: 120610601:

CHARLES F. TUCKER, 0F HARTFORD, CONNECTICUT,

o'IL-HoLE oovEB,

Specification of Letters Patent.

Patented Mar. 30, 1915.

Application filed November 11,1913. Serial No. 800,309.

To all whom it may concern Be it known that 1, CHARLES F. TUCKER, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Oil-Hole Covers, of which the following is a specification. I p

This invention relates to oil-hole covers, one of the objects of theinvention being the provision of an article of this character which is simple in construction, can be 1nexpensively and readily made and which is thoroughly dust-proof.

In the drawings accompanying and forming part of the present specification I have shown in detail one of the several convenient forms of embodiment of the invention which to enable those skilled in the art to practice the same will be set forth fully in the following description. I do not restrict myself to this disclosure; I may depart therefrom in several respects w1th1n the scope of the invg ntion defined by the claim following said description.

Referrlng to said drawings: Figure l is a View of the article, the plug member being in elevation and the cap member beingshown in section and also retracted, and, Fig. 2 is an elevation of the same.

Like characters-refer to like parts. in both views.

An oil-hole cover embodying the invention comprises a plug member as 2 and, a cap or closure member as 3, the plug member being usually provided as a means for mounting the device in position, for which purpose its forward or inner end is properly shaped. This forward end after 'the usual fashion may be plain, threaded or otherwise formed. As shown it is threaded as at 4:, has a longitudinal bore or passage 5 intersected by the port'6 and also has at its outer or upper end or at any other convenient place, a suitable abutment which as shown consists of an integral collar or flange 7. This abutment or flange presents a suitable bearing for a spring which also acts against a. suitable abutment as will hereinafter appear on the cap or closure member 3. Said plug member as thus far described, is comparatively common, and no claim is made to the same per se. The cap member 3 is shown as bemg of one piece, having an open forwardend and a closed rear end and as imperforate throughout its entire extent, the body thereof inclosing the coiled spring 8 which as shown encircles the outer portion of the plug member 2, -one end of the spring bearing against the abutment 7 and the other end against the abutment 9 on the cap member 3, said abutment 9 as shown consisting of an inwardly bent or turned annular flange. The spring 8 is of protractile or push type and it exeria a constant tendency to advance the cap mem- 5 her 3, by reason of which the body thereof normally closes the port or oil introducing opening 6 at which time the outer closed end of the cap member has a bearing directly against the plug memben. When the cap'im member is in its normal position, the port is wholly closed or covered and the same observation applies in fact to about half of the plug member; or at least the forward portion of the cap member should preferably extend beyond the port 6 to make the oilhole cover virtually dust-proof. To supply oil to a bearingor other part the cap member 3 is drawn back an extent sufiicient to uncover or partially uncover the port 6 to receive the snout of an oil-can which can be utilized for holding said cap member in its backward position suflicientl to supply the necessary amount of oil. Wllen this is done the cap member will be released and will be instantly advanced to its initial position by the spring 8. When the plug member is screwthreaded as at 4 I form a polyg ial portion thereupon to receive a wrench, and this can be conveniently secured by the 0pposite flat faces 10 on said plug member. It should be noted that the interior of the cap member from the outer closed end thereof to the abutment 9 is of uniform diameter.

What 1 claim is: r p An oil-hole cover having a plug member,

and a cap member, the cap member havin the forward end open and the rear en the p1uginember having a hore and also havthe cap Inember'from its outer closed end to ing a port opening into said bore, said spring its abutment being of uniform diameter. 1 serving to constantly advance the cap mem- In testimony whereof I afiix my signature her to cause the body thereof to normally in presence of twd v'viizhe'sses.

close the port and the outer end of the plug I CHARLES F. TUCKER. member when the cap anember is advanced, Witnesses:

having a bearing directly against said closed HEATH SUTHERLAND,

end of the cap member and the interibr of L. L. MARKEL. 

